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Statements: Some rats are cats. Some cats are dogs. No dog is cow. Conclusions: No cow is cat. No dog is rat. Some cats are rats.

None follows
Only I and II follow
Only II and III follow
Only III follows
All I, II and III follow

Correct Answer: Only III follows

Explanation:

III is the converse of the first premise and so it holds.

Some rats are cats. Some cats are dogs.

Since both the premises are particular, no definite conclusion follows.

Some cats are dogs. No dog is cow.

Since one premise is particular and the other negative, the conclusion must be particular negative (O-type) and should not contain the middle term. So, it follows that 'Some cats are not cows'.

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